For one thing, Palm (PALM) is waiving its $99 app submission fee for open-source webOS apps. For another, it’s giving developers the option of selling their apps through the App Catalog or via a Web-based storefront.

The first option entails a $50-per-app fee and requires review and approval by Palm. This includes the chance to bid on priority placement in the App Catalog if developers wish. The second option requires neither fee nor review and allows developers to distribute their apps over the Web with Palm handling transactions and fulfillment–assuming the apps conform to Palm’s content and user interface criteria.

“By opening up a web distribution channel free from our review, we are placing a great deal of trust in you–the developer–and the community,” Palm said on its blog. “We want you to embrace these principles, establish a high bar of quality and user experience, and help enforce these rules.”

An interesting strategy–assuming developers do establish the high bar of quality to which the company refers. Certainly, it’s very different from Apple’s (AAPL) approach, which includes an application-approval process criticized as obtuse and byzantine. By offering developers the chance to pay to promote their software in its Apps Catalog or to distribute it via the Web without having to suffer through an approval process, Palm is positioning its program as the polar opposite of Apple’s. Question is, are these enticements enough to win their attention?

“We put the NDA in place because the iPhone OS includes many Apple inventions and innovations that we would like to protect, so that others don’t steal our work,” Apple (AAPL) explained in a statement posted to its Developer Program site. “It has happened before. While we have filed for hundreds of patents on iPhone technology, the NDA added yet another level of protection. We put it in place as one more way to help protect the iPhone from being ripped off by others. However, the NDA has created too much of a burden on developers, authors and others interested in helping further the iPhone’s success, so we are dropping it for released software.”